Proudly Australian Owned & Operated

Proudly Australian Owned & Operated

Now in its 3rd generation of ownership, Master Instruments continues to specialise in the manufacture, importation & distribution of batteries, battery packs & associated equipment such as battery chargers, analysers & power products, for both the consumer & industrial sectors.

Our Products

Our Products

From consumer focused AA batteries to replacement mobile or laptop batteries; or an in-house manufactured medical equipment battery to fully customised battery solutions for mining or defence projects, we.ll have a suitable solution for you.

Retail & Wholesale Support

Retail & Wholesale Support

With over 8000 stocked lines covering a multitude of applications and fitments, MI can support your retail or wholesale business by providing fast and efficient service and quality products. Our strength is our ability to efficiently cater to all size orders.

Custom & Industrial Battery Solutions

Custom & Industrial Battery Solutions

With in-house & offshore manufacturing capabilities specialising in all primary and rechargeable technologies, we have proven results in industries such as mining, medical, defence and more.

Batteries By Application Use

Explore by product category, application or intended use

Batteries By Chemistry

Find your battery by chemistry type both rechargeable & primary

Battery Chargers

Chargers for batteries and electronic devices

Battery Analysers

View our range of battery testers & analysers

Battery Assembly

Custom battery pack assembly provision

Industry Solutions

Explore our capabilities to supply your industry need

Power Products

For all your AC & DC power supplies, solar, inverters & power distribution

Battery Assembly Parts

Battery assembly components, parts, leads & connectors

Test & Measurement

Digital test & measurement, telco equipment analogue meters & shunts

Torches & Flashlights

LED & standard torches, flashlight & exit light batteries

Battery Holders & Cases

We cater for a range of battery holders and cases

Power Engineering Tools

Crimping, Opening & Extraction Tools, Cordless Soldering Irons.

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Featured Products

Universal Power Tool Battery Charger

The ACMGR universal charger is suitable many 21.6V to 36V power tool batteries - just add the adaptor plate! Click the heading to read more

Energizer Lithium AA Bulk

Master Instruments now has the Energizer L91 AA Lithium available in bulk.  Click the heading to read more

Battery for iPad Mini 2 & 3

MI now has a replacement battery suitable for use with the Apple iPad Mini 2 and 3's. Click the heading for more

Victron Super Cycle AGM Battery

Did you know the 100Ah AGM Super Cycle battery is capable of up to 300 cycles at 100% DOD?  Click the heading for more

Products by Brand


ICS1 Battery Guardian


Battery Guardian - Fully Automatic 6V and 12V 1.0Amp Charger and Maintainer now availableRead More

New Enecharger Premium Cable Range


Not all cables are created equal - check out the new range of Premium Charge & Sync cables from EnechargerRead More

Truth In Capacity


Recently, a long term MI customer was challenged about the low capacity of the 18650 sized cells he had available. To satisfy his curious nature, he went online and bought the higher capacity versions to see if the stated capacity was “fact or fiction”Read More

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